package com.leo.foodmaster.commons.config;

import com.leo.foodmaster.commons.constants.AuthConstants;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.*;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spi.service.contexts.SecurityContext;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.List;

/**
 * <p>
 * Swagger2的接口配置
 * </p>
 *
 * @author ：Leo
 * @since ：2021-06-24 16:20
 */
@Configuration
@EnableSwagger2
public class SwaggerConfig {
    @Resource
    private FoodMasterProperties foodMasterProperties;
    private static final String BASE_PACKAGE = "com.leo.foodmaster.admin.";

    @Bean
    public Docket systemApi() {
        String basePackage = BASE_PACKAGE + "system";
        String groupName = "系统管理模块";
        return createRestApi(groupName, basePackage);
    }

    @Bean
    public Docket foodMaterialApi() {
        String basePackage = BASE_PACKAGE + "foodMaterial";
        String groupName = "食材管理模块";
        return createRestApi(groupName, basePackage);
    }

    @Bean
    public Docket purchaseApi() {
        String basePackage = BASE_PACKAGE + "purchase";
        String groupName = "采购管理模块";
        return createRestApi(groupName, basePackage);
    }

    /**
     * 创建API
     */
    private Docket createRestApi(String groupName, String basePackages) {
        return new Docket(DocumentationType.SWAGGER_2)
                // 是否启用Swagger
                .enable(foodMasterProperties.isSwaggerEnabled())
                // 分组名称
                .groupName(groupName)
                // 用来创建该API的基本信息，展示在文档的页面中（自定义展示的信息）
                .apiInfo(apiInfo())
                // 设置哪些接口暴露给Swagger展示
                .select()
                // 扫描所有有注解的api，用这种方式更灵活
                /*.apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class))*/
                // 扫描指定包中的swagger注解
                .apis(RequestHandlerSelectors.basePackage(basePackages))
                // 扫描所有
                /*.apis(RequestHandlerSelectors.any())*/
                .paths(PathSelectors.any())
                .build()
                /* 设置安全模式，swagger可以设置访问token */
                .securitySchemes(securitySchemes())
                .securityContexts(securityContexts())
                .pathMapping(foodMasterProperties.getSwaggerPathMapping());
    }

    /**
     * 安全模式，这里指定token通过Authorization头请求头传递
     */
    private List<ApiKey> securitySchemes() {
        List<ApiKey> apiKeyList = new ArrayList<>();
        apiKeyList.add(new ApiKey(AuthConstants.JWT_HEADER, AuthConstants.JWT_HEADER, "header"));
        return apiKeyList;
    }

    /**
     * 安全上下文
     */
    private List<SecurityContext> securityContexts() {
        List<SecurityContext> securityContexts = new ArrayList<>();
        securityContexts.add(SecurityContext.builder()
                .securityReferences(defaultAuth())
                .forPaths(PathSelectors.regex("^(?!system).*$"))
                .build());
        return securityContexts;
    }

    /**
     * 默认的安全上引用
     */
    private List<SecurityReference> defaultAuth() {
        AuthorizationScope authorizationScope = new AuthorizationScope("global", "accessEverything");
        AuthorizationScope[] authorizationScopes = new AuthorizationScope[1];
        authorizationScopes[0] = authorizationScope;
        List<SecurityReference> securityReferences = new ArrayList<>();
        securityReferences.add(new SecurityReference("Authorization", authorizationScopes));
        return securityReferences;
    }

    /**
     * 添加摘要信息
     */
    private ApiInfo apiInfo() {
        // 用ApiInfoBuilder进行定制
        return new ApiInfoBuilder()
                // 设置标题
                .title("标题：云食配管理系统_接口文档")
                // 描述
                .description("描述：用于管理集团旗下的公司、人员、业务等信息")
                // 作者信息
                .contact(new Contact(foodMasterProperties.getAuthor(), null, null))
                // 版本
                .version("版本号:" + foodMasterProperties.getVersion())
                .build();
    }
}
